The LCC is a southwestward current following along the Russian coast. It bifurcates into two branches near the east Russian bight (134E, 42N): the western branch flows along the Russian-Korean coast and becomes the NKCC. The eastern branch flows southeastward, then turns eastward at 41.5N, and becomes the south flank of the JB gyre. The LCC has a strong seasonal variation with the maximum speed in the winter (Fig. 3a) and the minimum speed in the summer (Fig. 3c).